Maize is an important food crop and feed crop, and it is also the world's highest-yield crop. It is also called Baogu, Baolu, and glutinous rice. The grass is a kind of annual herb and it is cultivated all over the world. Its planting area and total output are only Next to rice and wheat.
How to fertilize corn at all stages?
1. Base fertilizer: Basal fertilizer is mainly applied with delayed fertilizer and quick-acting fertilizer. Slow-speed fertilizer refers to farmyard fertilizer, quick-acting fertilizer refers to calcium sulphate, urea, potash fertilizer and zinc fertilizer, 1000-1500 kg organic fertilizer, and 30 kg general calcium. , 6 kilograms of urea and 2 kilograms of zinc fertilizer were applied as a base fertilizer in one shot.
2, Miao Fei: leaves in the 6 - 7 leaves 10 kilograms of urea applied to the corn plants, when applied urea to leave the plant 3 - 4 cm, can not be applied to the plants, the most fertilization time Good choice after the rainy day, if the weather is too dry, it is better to pour water after dressing.
3, jointing fertilizer: jointing fertilizer is generally applied two months after sowing, when the number of corn leaves is generally 11 - 12, 24 kg of urea and 10 kg of potassium fertilizer once applied. The method of fertilization is the same as the method of seedling fertilizer. If necessary, add a little fertilizer.
What are the needs of corn for fertilizer?
The corn plants contain 16 elements, and all of them except C are absorbed from the soil. Nitrogen, phosphorus, potassium, sulfur, calcium, and magnesium are needed in larger quantities. Iron, manganese, and zinc are needed in smaller amounts. Copper, cockroaches and so on. From the first 10 days of tasselling to 25-30 days after pumping, corn is the stage with the fastest accumulation of matter and the largest amount of fat. This stage absorbs 70-75% of the total amount of nitrogen and 60-70% of the total absorbed fertilizer. Phosphorus and 65% potassium. It is estimated that the production of 100 kilograms of corn seed requires 2.5 kg of nitrogen, 1 kg of phosphorus, and 2.1 kg of potassium. If 500 kg of corn are produced, about 33 kg of urea or 50 kg of ammonium nitrate, 31 kg of superphosphate, and 13 kg of potassium sulfate are required.
The corn plants contain 16 elements, and all of them except C are absorbed from the soil. Nitrogen, phosphorus, potassium, sulfur, calcium, and magnesium are needed in larger quantities. Iron, manganese, and zinc are needed in smaller amounts. Copper, cockroaches and so on. From the first 10 days of tasselling to 25-30 days after pumping, corn is the stage with the fastest accumulation of matter and the largest amount of fat. This stage absorbs 70-75% of the total amount of nitrogen and 60-70% of the total absorbed fertilizer. Phosphorus and 65% potassium. It is estimated that the production of 100 kilograms of corn seed requires 2.5 kg of nitrogen, 1 kg of phosphorus, and 2.1 kg of potassium. If 500 kg of corn are produced, about 33 kg of urea or 50 kg of ammonium nitrate, 31 kg of superphosphate, and 13 kg of potassium sulfate are required.
What kind of fertilizer is best for corn?
The nutrient demand of corn during the whole growth cycle is the highest in nitrogen, followed by potassium, and phosphorus in the third. It also requires the supply of appropriate mineral elements. The proportion of N, P, and K is 1:0.49:0.9. Base fertilizer is generally applied 3000 kg organic fertilizer, all phosphorus and potassium fertilizer, 1/3 nitrogen fertilizer is appropriate. Roots of maize seedlings are incompletely developed, and their ability to absorb nutrients is weak. We should purchase fertilizers containing available nutrients as seed fertilizers, and also apply decomposed farmyard fertilizers as seed fertilizers. Generally, about 6 kg of ammonium sulfate or decomposed farmhouse fertilizer is applied per mu. Kilograms, can be appropriate to add appropriate amount of phosphorus and potassium fertilizers. Maize in the big bell-mouth period is the period with the most demand for fertilizer, the absorption rate is also faster, and fertilizers with fast nitrogen and high nitrogen content can be selected.
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